Cobra MR F77W GPS Owner's Manual page 16

Getting Started
Operating Your Radio
To Squelch Your Radio:
Squelch Knob
1. With the Squelch knob turned fully counter-clockwise, turn
the On-Off/Volume knob clockwise until you hear
a hissing (noise) sound.
2. Turn the Squelch knob clockwise until the hissing
sound stops.
Squelch
Turning the Squelch knob further clockwise (higher barrier)
will filter weak and medium strength signals until only the
strongest signal can get through at the highest squelch setting.
The Squelch bar graph will be shown to indicate the Squelch
Turn Till Hissing
Sound Stops
setting. 2 seconds after finishing the Squelch adjustment, the
radio will return to the Standby mode.
To Receive Weaker Signals:
1. Turn the Squelch knob counterclockwise (lower barrier).
MRF77W GPS E & MRF77B GPS E LCD POP LABEL 1:1
Lower Barrier If the squelch is set so that you can hear a continuous hissing
sound, the memory scan and tri-watch functions will be blocked.
Standby And Receive
55mm Wide x 30mm High
Standby mode is the usual mode for the radio whenever it is
turned On.
From Standby Mode, You Can:
Change your radio's settings using set-up routines.
n
Receive messages on the current channel as well
n
as DSC messages.
Listen and Receive NOAA alerts if Weather Alert mode is
n
turned On.
Standby Mode
Switch to Transmit mode using the Talk button.
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While the radio is in Standby mode, the Receive mode is
entered whenever a strong enough signal to break squelch is
sent to the radio. You will hear the message through whichever
speakers are connected to the radio.
Up/Down Buttons
To Change The Channel You Are Listening To,
You Can Choose One Of The Following:
a. Press the Up/Down buttons. This will take you to
the next higher or lower VHF channel. For rapid
advance, press and hold the Up or Down button.
Channel 16/9 Button
b. Press the Channel 16/9 button. This will take
you to Channel 16 with one (1) press and to Channel 9 with
a second press. Additional presses will toggle between
Channels 16 and 9 and the current user selected channel.
26 English
INT 25W
MEM
21:12 11/11
25.53.438N
110.27.843W EMERG
CALL
TW SCAN MORE
Getting Started
Operating Your Radio
c. To listen to the Weather Radio press the WX (Weather)
Weather Button
soft key. This will activate the weather radio mode. When
in the Weather mode, the Up/Down buttons will change
the weather channel.
d. Press and release the Back softkey to return the radio to
Standby Mode.
HI/LO Transmit Setting
Transmit Power Output
Your radio can Transmit selectively at one (1) or 25 watts of power. Cobra
you maintain the low power setting for short-range communications and to avoid
overpowering nearby stations with your signal. Use the high power setting for long-range
communications or when you do not receive a response to a signal sent at one (1) watt.
To Toggle Between The High And Low Power Modes:
High/Low Power Button
1. Press the High/Low Power button. The LCD will show which
mode is in effect.
Some channels are restricted to use at a maximum of one
(1) watt. Your radio will automatically set the power to Low
Power mode when you select those channels.
While using the U.S.A. channel map, if, in an emergency,
USA 1W
you need to increase the output power on Channel 13 and
no gps Data
emerg
Channel 67 for your signal to be heard, you can override the
TW CALL SCAN more
Low Power mode by pressing and holding the High/ Low
Power button.
Transmit a Message
1. Check to see that your unit is set to a proper channel for the
type of message you plan to send.
2. Toggle to the low power setting.
3. With the microphone about two (2) inches [five (5) cm] from
your mouth, press and hold the Talk button and speak into
the microphone. Transmit will be indicated on the LCD.
4. Release the Talk button when you are finished speaking. Your
unit can only operate in either the Transmit or the Receive
mode at any given time. You will not hear the response to your
message unless the Talk button is released.
NOTE
If the Talk button is held down for five (5) minutes, the radio will
automatically cease transmitting to prevent unwanted signal generation.
As soon as the Talk button is released, it can be pressed again to
resume transmission.
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